Improvement in injectors for steam-boilers



UNITED STATES PATENT Ormea.

SIDNEY MALTBY AND CARLES OBCRN, OF DAYTON, ASSIGNORS TO THEMSELVES ANI) WM. H. CLARK, CF CINCINNATI, OHIO.

IMPROVEMENT IN INJECTORS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 50,205, dated September 26, 1865.

To all whom it 'may concern.:

Be it known that we, SIDNEY MALTBY and CHARLES CBORN, of Dayton, in the county of Montgomery and State of Ohio, have invented a new and Improved Injector for Feeding Steam-Boilers; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings,- and to the letters of reference marked thereon.

Like letters refer to like parts, the numerals used with the letters referring to the letters ot' the different figures.

The nature of our invention consists in the construction of an improved steam`-boiler injector, and the use of a water-jacket applied to any form of injector, to cause a more constant operation with less attention.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

Figure 1 represents a sectional view ot the injector with its several attachments. Fig. 2 represents a sectional view of a modified form of the injector. Fig. 3 represents a sectional view of another modilication of the injector. Fig. et represents an injector-index. Fig. 5 represents a device to regulate the supply o water.

A is a steaminduction pipe, conveying the steam into the hollow vessel B, t-his vessel 'having a stop-cock, 1, which is used to carry oft' the water until the steam no longer coudenses. The stop-cock 2 is closed whilethe hollow vessel B is being heated sufficiently by the steam.

E is a regulating-valve, to govern the passage of the steam, having openings a. These openings have corresponding openings m in the packing-ring F, through which the steam passes, and by turning the valve within its ground seat the supply of steam is regulated. The steam passes from the pipe C, in the direction indicated by the arrows, through a series oforices, m,in the packin g-rin gF, andthrou gh corresponding orifices a of the valve E; thence through the opening o through the orice of the nozzle G, at the end of which it unites with the water. The nozzle G has a stem by which it is turned in a ground seat of the nozzle H, the two nozzles having a series of corresponding orices for the passage of water, these orifices being so small that no substance can pass them which would obstruct the nozzles. The turning of one nozzle within the other regulates the tlow of water. I, a waterinduction pipe, having a check-valve. 5, on the end, within the hollow vessel K. This valve prevents the blowing of the water out of the pipe when the injector fails to opera-te. This arrangement prevents the heating ot the vessel K and the induction-pil'ie by the steam. In using hot water the stop-cock 4 is used to carry olt' the steam which accumulates within the hollow vessel K. TheA water passes from the vessel K to the space within the water-jacket T; thence through the oritices t t ofthe injector S into the groove of the nozzle H, and through a series of openings, r, of the nozzle; and thence through the openings s of the nozzle G iu the direction shown by the arrows, passing outside of the nozzle G, and uniting with the steam at the end of said nozzle. Thus united they pass through the end of the nozzle H, passing the open space into the eduction-nozzle L, and from thence through the feed-pipe to the boiler. The valve -case M is screwed down to a shoulder, and the end is closed with an extra or supplementary valve, connected to the stem of the valve N. This valve closes the case and receives the force of the water and thereby carries the valve from its seat. The supplementary valve secures the raising of the valve with less force than would be required if its action were directly on the check-valve, in consequence ot` the-water acting on an increased surface.

It is apparent that the usual form of checkvvalve presents the greater surface on the side next to the boiler; hence a force greater than the resistance is required to force the valve from its seat, while by the arrangement here presented this difticulty is overcome. The stop-cock 3, on commencing the use of the injector,is opened until the steam and water are fully in motion, when byinstantly closing the same the full force is communicated at once to impel the water through the feed-pipe.

The cap D has the induction-pipe C connected atits top, and is screwed into the injector' lS, making the joints on either side ot" the packing-ring F steam-tight, and thus holding the,

packing-rin g F and the two nozzles G and H Y U, is supplied with the overow of Water through the pipe 2,;and the Water flows out at the pipe R. TheV use is to prevent the temperature of the injector rising above 2120 in Workin g hot Water.

In Working cold Water it is not necessary to use the external jacket, U. The inner jacket, T, has the induction-water passing or circulating through it to the injector, which Water preserves a lower and more uniform temperature, thereby preventing the unsetting of the injector from slight changes of temperature. For other forms ofinjector we construct a case or jacket of suitable forni, which in effeet is identical with the jacket T. The waste pipe P is used to carry off any water accumulating about the nozzles.

Fig. 2 represents a modification, dispensing with the valve E and providing orices u a for the passage of the Water to the space occupied by the valve and steam space to lessen the heating surface. The stean1pipe is attached to the end of the nozzle G in such manner that the nozzle may be adjusted.

Fig. 3 represents still another modification. The plug e closes the stem of nozzle G, and furnishes a surface for the set-screw W, which holds the nozzle to its seat. The steam-pipe is connected to the cap D, and the steam passes through the orifices y y to the inner space, thence through the openings o, as hereinbefore described.

Fig. 4 represents an injector-index, to enable the engineer to adjust the iiow of steam and water with the greatest accuracy. A is an index having degrees marked thereon and numbered. B is an arm attached to the stem ofthe valve E. This arm is made to move along the index Al by the thumb-screw G', this screw having a movable nut, H', attached to the end of the index, and a movable joint, K, by which the requisite movement is given. The arm O is connected to thestem ofthe nozzle G, and' is similarly constructed and operated.

Fig. 5 represents a device to regulate the supply of water, used in connection with the injector. K2 represents the end of a steamboiler, a section being cut away to show the tloat within. A shaft, at H2, passes through the boiler-head, having a stuffing-box, and to the end within the boiler is connected the arm attached to the lioat I2, the arm G2 having a joint by which it is connected to the arm E2, which connects the levers A2 and B2, which are connected to the valve E and nozzle G, hereinbefore described. The movement is produced by the Heat and is communicated so as to change the relation of the holes m and n andthe holes r ands, and thereby the flow of water into the boiler is regulated to the amount required.

Having thus fully described our invention, what We desire to secure by Letters Patent isl. The valve E, the nozzle G, the packingring F, the nozzle H, the cap D, and cylinder S, constructed and arranged substantially as described, and for the purposes set forth.

2. The arrangement ofthe nozzle L, the waste-cock Z, the flange V, the lock-nut W,

and the cylinder S, substantially as described.

3. The supplementary-valve a', attached toa check valve, substantially as described, and for the purposes set forth. v

4. The arrangement of the hollow vessel K., the check-valve 5, or its equivalent, and the vent-cock 4, for the purposes specified.

5. The arrangement of the hollow vessel B, the pipe A, and the stop-cocks 1 and 2, furthe purposes specified.

6. The adjusting-index, in combination with the steam-injector, for the purposes set forth.

7. The iloat l2, in combination with the valves of the injector, for the purposes specitied.

8. The arrangement of the water-jackets T and U, substantially as described, and for the j purposes set forth.

SIDNEY MALTBY. CHARLES oBoRN.

Witnesses:

BARTON PIGKERING, THos. D. MITCHELL. 

